package com.itheima.reggie.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.itheima.reggie.common.R;
import com.itheima.reggie.entity.Employee;
import com.itheima.reggie.service.EmployeeService;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.DigestUtils;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpServletRequest;
import java.time.LocalDateTime;

/**
 * @author ：sean
 * @date ：Created in 2022/4/16
 * @description ：
 * @version: 1.0
 */
@Slf4j
@RestController
@RequestMapping("/employee")
public class EmployeeController {

	@Autowired
	private EmployeeService employeeService;

	@PostMapping("/login")
	public R<Employee> login(
		HttpServletRequest request,
		@RequestBody Employee employee){
		//1、将页面提交的密码password进行md5加密处理
		String password = employee.getPassword();
		String md5Password = DigestUtils.md5DigestAsHex(password.getBytes());

		//2、根据页面提交的用户名username查询数据库
		LambdaQueryWrapper<Employee> lambdaQueryWrapper = new LambdaQueryWrapper<>();
		lambdaQueryWrapper.eq(Employee::getUsername, employee.getUsername());
		Employee dbEmployee = employeeService.getOne(lambdaQueryWrapper);

		//3、如果没有查询到则返回登录失败结果
		if(dbEmployee == null){
			return R.error("登录失败，查无此人");
		}
		//4、密码比对，如果不一致则返回登录失败结果
		if(!dbEmployee.getPassword().equals(md5Password)){
			return R.error("登录失败，密码不对");
		}

		//5、查看员工状态，如果为已禁用状态，则返回员工已禁用结果
		if(dbEmployee.getStatus() == 0){
			return R.error("账号已禁用");
		}

		//6、登录成功，将员工id存入Session并返回登录成功结果
		request.getSession().setAttribute("employee",dbEmployee.getId());

		return R.success(dbEmployee);
	}

	/**
	 * 员工退出
	 * @param request
	 * @return
	 */
	@PostMapping("/logout")
	public R<String> logout(HttpServletRequest request){
		//清理Session中保存的当前登录员工的id
		request.getSession().removeAttribute("employee");
		return R.success("退出成功");
	}

	@PostMapping
	public R<String> save(HttpServletRequest request,
						  @RequestBody Employee employee){
		// 打印请求数据
		log.info("[新增,{}]",employee);
		// 设置初始密码(MD5加密)
		String dbPassword = DigestUtils.md5DigestAsHex("123456".getBytes());
		employee.setPassword(dbPassword);
		// 设置创建和更新时间
		//employee.setCreateTime(LocalDateTime.now());
		//employee.setUpdateTime(LocalDateTime.now());
		// 获取员工ID、设置创建和更新用户的ID
		Long empId = (Long)request.getSession().getAttribute("employee");
		//employee.setCreateUser(empId);
		//employee.setUpdateUser(empId);
		// 完成保存业务
		employeeService.save(employee);
		return R.success("新增成功");
	}

	/**
	 * 员工信息分页查询
	 * @param page 当前查询页码
	 * @param pageSize 每页展示记录数
	 * @param name 员工姓名 - 可选参数
	 * @return
	 */
	@GetMapping("/page")
	public R<Page> page(int page, int pageSize, String name){
		log.info("page = {},pageSize = {},name = {}" ,page,pageSize,name);
		//构造分页构造器
		Page pageInfo = new Page(page,pageSize);

		//构造条件构造器
		LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper();
		//添加过滤条件
		queryWrapper.like(StringUtils.isNotEmpty(name),Employee::getName,name);
		//添加排序条件
		queryWrapper.orderByDesc(Employee::getUpdateTime);

		//执行查询
		employeeService.page(pageInfo,queryWrapper);
		return R.success(pageInfo);
	}

	@PutMapping
	public R<String> update(HttpServletRequest request,
							@RequestBody Employee employee){
		log.info(employee.toString());

		Long empId = (Long)request.getSession().getAttribute("employee");

		employee.setUpdateTime(LocalDateTime.now());
		employee.setUpdateUser(empId);
		employeeService.updateById(employee);

		return R.success("员工信息修改成功");
	}

	@GetMapping("/{id}")
	public R<Employee> getById(@PathVariable Long id){
		Employee employee = employeeService.getById(id);
		if(employee != null){
			return R.success(employee);
		}
		return R.error("无此员工");
	}
}
